updated 5/22/2010 2:45:17 PM ET 2010-05-22T18:45:17

A series of moderate earthquakes south of the border shook buildings in downtown San Diego but there are no reports of damage or injuries.

The U.S. Geological Survey says a magnitude-5.3 earthquake struck at 10:30 a.m. Saturday, centered in Baja California about 16 miles southwest of Calexico. A magnitude-4.9 earthquake struck about three minutes later, followed by a 3.6 quake at 10:59 a.m.

San Diego County Sheriff's Lt. Hank Turner says shaking was felt in downtown San Diego. Dispatchers received no calls reporting damage or injuries.

Saturday's earthquakes struck in the same area as the magnitude-7.2 quake that killed two people in Mexicali, Mexico, on April 4. The region has seen a surge in seismic activity since then.

Check back for more details on this developing story.

Copyright 2010 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.

Discuss:

Discussion comments

,

Most active discussions

  1. votes comments
  2. votes comments
  3. votes comments
  4. votes comments